公开(公告)号：US20190229278A1

公开(公告)日：2019-07-25

申请号：US16249209

申请日：2019-01-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Airi UEDA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided. The organic compound is represented by General Formula (G1) having a dibenzobenzofuroquinoxaline skeleton or a dibenzobenzothienoquinoxaline skeleton. In General Formula (G1), Q represents O or S, at least one of R1 to R12 represents a first group having a substituted or unsubstituted condensed aromatic ring or condensed heteroaromatic ring having 3 to 30 carbon atoms, and the other or others of R1 to R12 each independently represent any one of hydrogen, a halogeno group, a hydroxy group, an amino group, a nitro group, and a group having 1 to 50 carbon atoms.

公开(公告)号：US20250160107A1

公开(公告)日：2025-05-15

申请号：US19020156

申请日：2025-01-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromi SEO ,  Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Nobuharu OHSAWA ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H10K50/11 ,  H10K30/20 ,  H10K50/15 ,  H10K59/12 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40

Abstract: An organic semiconductor device with low driving voltage is provided. The organic semiconductor device includes a layer containing an organic compound between a pair of electrodes. The layer containing an organic compound includes a hole-transport region. The hole-transport region includes a first layer and a second layer. The first layer is positioned between the anode and the second layer. When a potential gradient of a surface potential of an evaporated film is set as GSP (mV/nm), a value obtained by subtracting GSP of an organic compound in the second layer from GSP of an organic compound in the first layer is less than or equal to 20 (mV/nm).

公开(公告)号：US20240373748A1

公开(公告)日：2024-11-07

申请号：US18760631

申请日：2024-07-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka HARA ,  Keito TOSU ,  Hideko YOSHIZUMI ,  Toshiki SASAKI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H10K85/60 ,  C07D491/048 ,  C07D495/04 ,  C07D519/00 ,  H10K50/11 ,  H10K101/10

Abstract: A novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative is provided. The organic compound has a structure in which a benzothienocarbazolyl ring, a benzofurocarbazolyl ring, an indolocarbazolyl ring, or an indenocarbazolyl ring is bonded to the 8-position of a benzofuropyrimidine ring or a benzothienopyrimidine ring directly or through an aromatic hydrocarbon ring. That is, the organic compound is represented by General Formula (G1) below.

公开(公告)号：US20240260460A1

公开(公告)日：2024-08-01

申请号：US18403876

申请日：2024-01-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Toshiki SASAKI ,  Hiromitsu KIDO ,  Nobuharu OHSAWA

IPC: H10K85/60 ,  C09K11/06 ,  H10K50/13 ,  H10K85/30 ,  H10K85/40 ,  H10K101/10

CPC classification number: H10K85/6572 ,  C09K11/06 ,  H10K50/131 ,  H10K85/346 ,  H10K85/40 ,  H10K85/6576 ,  H10K2101/10

Abstract: A light-emitting device with high heat resistance in a fabrication process is provided. The light-emitting device includes a light-emitting layer and a first layer between a first electrode and a second electrode. The first layer is positioned between the light-emitting layer and the second electrode and is in contact with the light-emitting layer. The light-emitting layer contains a light-emitting substance, a first organic compound, and a second organic compound. The first layer contains a third organic compound different from the first organic compound and the second organic compound. The light-emitting substance emits blue phosphorescent light. The third organic compound includes a bicarbazole skeleton and a heteroaromatic ring skeleton having one selected from a pyridine ring, a diazine ring, and a triazine ring.

公开(公告)号：US20240174706A1

公开(公告)日：2024-05-30

申请号：US18381473

申请日：2023-10-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Yui YOSHIYASU ,  Masatoshi TAKABATAKE ,  Hiroki MURAKAMI ,  Nobuharu OHSAWA ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: C07F15/00 ,  C09K11/06 ,  H10K85/30 ,  H10K85/60

CPC classification number: C07F15/0086 ,  C09K11/06 ,  H10K85/346 ,  H10K85/654 ,  H10K85/6572

Abstract: A novel organometallic complex that is highly convenient, useful, or reliable, and a light-emitting device are provided. The organometallic complex is represented by General Formula (G2). In General Formula (G2), each of R1 to R6, R8 to R22, and R31 to R34 independently represents hydrogen (including deuterium), an alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, at least one of R31 to R34 represents an alkyl group having 1 to 10 carbon atoms or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, and n is an integer of 1 to 4.

公开(公告)号：US20240172461A1

公开(公告)日：2024-05-23

申请号：US18496520

申请日：2023-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Kazuki KAJIYAMA ,  Hiromitsu KIDO

IPC: H10K50/11 ,  C09K11/06 ,  H10K85/60

CPC classification number: H10K50/11 ,  C09K11/06 ,  H10K85/6572 ,  H10K2101/10

Abstract: A highly efficient light-emitting device is provided. The light-emitting device includes a light-emitting layer between a first electrode and a second electrode. The light-emitting layer includes at least a light-emitting substance and a first substance, the half width of an emission spectrum of the light-emitting substance is 0.35 eV or less, the luminescence lifetime of delayed fluorescence caused by photoexcitation of the first substance is shorter at a first temperature than at a second temperature, the first temperature is lower than the second temperature, and the first temperature and the second temperature are each higher than or equal to 10 K and lower than or equal to 300 K.

公开(公告)号：US20240172460A1

公开(公告)日：2024-05-23

申请号：US18496382

申请日：2023-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Kazuki KAJIYAMA ,  Hiromitsu KIDO

IPC: H10K50/11 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60

CPC classification number: H10K50/11 ,  C09K11/06 ,  H10K85/40 ,  H10K85/631 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6574 ,  H10K2101/25

Abstract: A light-emitting device with favorable carrier balance is provided. The light-emitting device includes a light-emitting layer between a first electrode and a second electrode. The light-emitting layer includes at least a first substance and a light-emitting substance, the first substance includes an organic compound having one or more of a carbazole ring, an aromatic amine skeleton, and a π-electron deficient heteroaromatic ring, a luminescence lifetime of delayed fluorescence caused by photoexcitation of the light-emitting substance is shorter at a first temperature than at a second temperature, the first temperature is lower than the second temperature, and the first temperature and the second temperature are each higher than or equal to 10 K and lower than or equal to 300 K.

公开(公告)号：US20240147835A1

公开(公告)日：2024-05-02

申请号：US18370219

申请日：2023-09-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Yui YOSHIYASU ,  Masatoshi TAKABATAKE ,  Hiroki MURAKAMI ,  Nobuharu OHSAWA ,  Hiromitsu KIDO

IPC: H10K85/30 ,  C07F15/00 ,  C09K11/06

CPC classification number: H10K85/346 ,  C07F15/0086 ,  C09K11/06 ,  H10K50/12

Abstract: To provide a novel organometallic complex and a novel light-emitting device that are useful or reliable. The organometallic complex includes platinum (Pt), a cyano group, and a phenyl group that has two alkyl groups at the ortho-positions. The light-emitting device includes an organic compound layer held between a pair of electrodes; the organic compound layer includes a light-emitting layer; the light-emitting layer contains an organic compound and the organometallic complex; the organometallic complex includes platinum (Pt), a cyano group, and a phenyl group that has two alkyl groups at the ortho-positions; and the difference between the LUMO level of the organic compound and the HOMO level of the organometallic complex is greater than or equal to 2.5 eV and less than or equal to 3.0 eV.

公开(公告)号：US20230320130A1

公开(公告)日：2023-10-05

申请号：US18017520

申请日：2021-07-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Airi UEDA ,  Hiromitsu KIDO ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K50/858 ,  H10K50/15 ,  C07C211/61 ,  C09K11/06

CPC classification number: H10K50/858 ,  H10K50/156 ,  C07C211/61 ,  C09K11/06 ,  H10K2102/351

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a function of emitting light, a first electrode, a second electrode, and a unit. The light has the maximum peak at a wavelength (lambda). The second electrode includes a region overlapping with the first electrode. The unit includes a region positioned between the first electrode and the second electrode. The unit includes a first layer, a second layer, and a third layer. The first layer includes a region positioned between the second layer and the third layer. The first layer contains a light-emitting material. The second layer includes a fourth layer and a fifth layer. The fifth layer includes a region positioned between the fourth layer and the first layer. The fourth layer contains a first organic compound. The first organic compound has a first refractive index with respect to light having the wavelength (lambda). The fifth layer is in contact with the fourth layer. The fifth layer contains a second organic compound. The second organic compound has a second refractive index with respect to light having the wavelength (lambda). The second refractive index is lower than the first refractive index.

公开(公告)号：US20230147615A1

公开(公告)日：2023-05-11

申请号：US18047000

申请日：2022-10-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nozomi KOMATSU ,  Sachiko KAWAKAMI ,  Hiromitsu KIDO ,  Masatoshi TAKABATAKE

IPC: C07D491/048 ,  C07D495/04 ,  H01L51/00

CPC classification number: C07D491/048 ,  C07D495/04 ,  H01L51/0036 ,  H01L51/0071

Abstract: An organic compound that is stable in an excited state and has high emission efficiency is provided. An organic compound represented by General Formula (G1) is provided. Note that in General Formula (G1), Q1 represents sulfur or oxygen. R1 to R5 each independently represent hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted polycyclic alkyl group having 6 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms. In addition, A1 represents an aryl group having 6 to 100 carbon atoms and including a substituted or unsubstituted substituent, or a heteroaryl group having 2 to 100 carbon atoms and including a substituted or unsubstituted substituent. Deuterium is substituted for at least one of hydrogen contained in R1 to R5 and A1.